Kneading-machine



(N Model.)

G. IIJ. BALL.

\ KNEADING MACHINE.

l l l NTTE STATES PATENT OFFICE.

GEORGE M. BALL AND FREDERIC J. BALL, OF BROOKLYN, NFV YORK.

KNEADlNo-MACHINE.

SPECIFICATION forming part of Letters Patent No. 576,296, dated February2, 1897.

Application filed June l2, 1896. Serial No. 595,259. (No model.)

To all whom it may concern:

Beit known that we, GEORGEM. BALL and FREDERIC J. BALL, of the city ofBrooklyn, in the county of Kings `and State of New York, have invented anew and useful Improvement in Kneading-Machines, of which the followingis a specication.

This invention is more especially adapted to kneading-machines of smallsize suitable for family use, although machines embodying the inventionmay be of larger capacity.

We will first describe the invention in detail with reference to thedrawings of a machine embodying the improvement, and afterward point outits novelty in claims.

Figure l represents a plan view of the machine; Fig. 2, a centralvertical section'of the same, and Fig. 3 a plan. of certain detailswhich will be hereinafter explained.

`A represents a pan of circular form, in the center of which is anupright hollow conical standard B, between which and the sides of thepan is formed an annular kneading-trough C. The pan Amaybe of sheetmetal and the standard B may be-of cast-iron and united with the pan inany convenient manner, as by soldering ata around the base of thestandard. In the center of the crown of the standard thereis'formed.at-.h the lower bearing for 'an upright center shaft D, whichhas also upper and lower bearings at t' and j in the top and bottom of arotary metal box E e, which is supported upon the top of the standard B,but is loose upon both the standard and the center shaft. Thisboxcontains also the bearings o and d for two inclined side shafts orpivots F F, which carry rotary kneadingblades G G, of any suitable form,which are dependent from the said shafts within the trough C. On eachshaft or pivot F there is fast a bevel-gear f, gearing with a bevel-gearg, fast on the center shaft D, which has applied to it means hereinafterdescribed to prevent it from turning in the pan-standard B.

The box E is represented as having one side e made separate and attachedby screws e md removable for access to the interior and t0 permit theintroduction of the center and side gears ff g. The shafts DF F arerepresented as inserted through their respective lower bearings j d d inthe box E and through the hubs of the gears, the latter being secured tothe shafts by pins h, which are inserted through them and the gears, thelatter fitting between the top and bottom of the box and thus holdingthe shafts in place lengthwise. The rotary box E has cast with ordirectly attached to it a hand-crank I-I, .for the purpose of turning itand carrying the kneadingblades around the pan while the latter isstationary. The gears ff, turning with the box around the gear g, whilethe pan, the shaft D, and the last-mentioned gear are stationary,receive a rotary motion on their own axes and so impart a rotary motionto the blades while the latter revolve around the pau. The pan may beset upon an ordinary kitchentable or any convenient support upon whichit may be kept stationary by any suitable means. It is represented asprovided with a lug at its bottom for the reception of a screwclamp tofasten it to the table or support.

The kneading apparatus, consisting of the box E and its contained shaftsand gearing, the kneading-blades, and crank-handle, are all removabletogether from the pan A,which, being thus unincumbered, can be used asan ordinary mixing-pan.

The kneading apparatus when detached from the pan can be more easilywashed or cleaned andinay be kept separate, while the pan may be hung upby the handle I, with which it is represented as provided.

The device which we will now describe for locking the kneading apparatusto the pan 'for use and for holding the shaft D against turning is shownin Figs. 2 and 3, the latter ligure representing an inverted plan of thepan-standard B and the shaft. This device consists of a projection lc,formed on one side of the shaft, and a downward projection 4 5, formedon and below the bottom of the center shaft-bearing b in thepan-standard B.. In one side of the bearing b, close to the end 4 of theprojection 4 5, there is a groove or keyway 6 for the passage of thesaid projection lo through the bearing to permit the attachment anddetachment of the kneading apparatus.

To attach the lineading apparatus to the pan, the gear-box E, which hasthe lower end of the center shaft D projecting downward through itsbottom, is placed over the stand--` ard B and the shaft entered into thebearing TOO b with its projection 7c in the groove G. The gear-box beingallowed to come down on the standard B, the projection 7c on the centershaft comes just below the bottom of the bearing b, and by turning thehandle H, and with it the gear-box, in the direction of the arrows shownin Figs. l and 2 the center shaft is caused to turn so far with thegear-box as to bring its projection 7c under the bearing b, as shown inFig. 2, and into contact with the end 5 of the projection 4t 5 on thebearing h, as shown in Fig. 3. The kneading apparatus is thus locked tothe pan and the rotation of the center shaft and its gear g is arrested.The continued turning of the handle and the gearbox then causes therotation of the kneading-blades on their own axes and their revolutionaround the pan.

Vhen it is desired to detach the kneading apparatus from the pan, it isonly necessary to turn the handle backward or in the oppo site directionto the arrows represented to bring the locking projection 7o on thecenter shaft opposite the groove G in the bearing b, when the whole ofsaid apparatus may be lifted from the pan.

It may be understood from the foregoing description that by the simpledevice, consisting of the projection k on the center shaft and theprojection 4 5 on the bearing provided for the said shaft on the pan,the kneading apparatus is not only locked to the pan, but the said shaftand the center gear are held stationary for the proper operation of saidapparatus, which is effected by the rotation of the Whole of saidapparatus bodily about its pivotal connection with the pan, which isconstituted by the center shaft.

What we claim as our invention is- 1. The combination with akneading-pan, of a detachable rotary kneading apparatus comprising acentral pivot, a fixed support Within the pan for the said kneadingapparatus, and a locking device between said central pivot and saidsupport for attaching said kneadin g apparatus to the pan, substantiallyas herein described.

2. The combination of a rotary gear-box having a directly-attachedhand-crank, a center gear and side gears geared together Within saidbox, the said side gears having kneading-blades dependent from thembelow the box, a kneading-pan having a central support for said box, anda shaft for said center gear constituting a pivotal connection betweensaid gear-box and the pan, substantially as herein described.

3. The combination of a pan having Within it a central ixed standard, adetachable rotary gear-box supported on said standard and containing acentral shaft and side shafts geared with said central shaft,kneadingblades attached to said side shafts, the said central standardcontaining a bearing for the lower portion of said central shaft whichprojects through the bottom of the gear-box, substantially as hereindescribed.

4l. The combination of a kneading-pan having Within it a fixed centralstandard, a rotary kneading apparatus supported on said standard andcomprising a central shaft about Which said apparatus rotates, a bearingin the crown of said standard for the lower part of said shaft, and alocking device between said shaft and standard consisting of a lateralprojection on said shaft below said bearing and a downward projection onthe bottom of said bearing, substantially as herein described.

GEORGE M. BALL. FREDERIC J. BALL. NVitnesses:

G. H. OLDRING, JNO. W. FRASER.

